At least 11 Pakistani soldiers were killed and 13 wounded in a suicide bomb attack at an army base in the Swat Valley.
The Pakistani Army issued a statement saying a single attacker blew himself up on February 3 at an "army sports area" where soldiers were playing volleyball as civilians watched.
One officer was reportedly among the killed.
The attack was claimed by the Tehrik-e Taliban, which called it "a revenge attack."
Pakistani Prime Minister Shahid Khaqan Abbasi called the incident "a cowardly attack" and pledged to root out "the last trace" of terrorism in Pakistan.
Based on reporting by AP and Reuters